Justin Bieber

2. Justin Bieber

The selfie king himself… Justin Bieber is VERY generous with his fans when it comes to showing off his toned body on Instagram and Twitter. A quick look through his latest snaps proves Justin may well have a dangerous addiction to posting up so-hot-it-hurts snaps of himself flexing his muscles or showing off an unusually placed new tattoo! We don't think the Beliebers will mind...